Putty applicator



y 1, 1941- J. M. CHRISTMAN ,247,604

PUTT.Y APPLICATOR Filed Dec. 2, .1938 3 SheetsSheet l Ill July 1, 1941. M H I M N 2,247,604:

PUTTY APPLICATOR Filed Dec. 2, 1938 3 Sheets-Sheet 2 July 1, 1941.

J. M. CHRISTMAN PUTTY APPLICATOR Filed Dec. 2, l938 7 s Sheets-Sheet 3 Patented July 1, 1941 PUTTY APPLICATOR v John M. Christman, Detroit, 'Michi, assignor :to Simplex Putty Applicator 00., Detroit, Mich.

Application 'December 2, 1938,'Serial No. 2431551 10 Claims. (C

invention relates to improvements in -devices for applying putty to window frames and the like, and :has for its object the provision o'f;a tool by means of which a uniformly dimensioned and smooth strip of rputty may be readily applied by .persons having little or no skill in this field.

In the application of putty to a window frame by the use of the' con'ventioal flat putty knife, it is essential that the knife should be held so as to engage both the ,pane and the adjacent portion of the sash, and the knife must be tilted at an angle to the plane of the applied putty strip so that the leading edge of the knife is spaced from the pane or the sash, or from both, the knife thus forming a tapered throat which compresses the putty into position, only the trailing edge of the knife .serving to smooth 'the'surface of the putty. -It is obvious that when the knife is so held, there is :no means whereby "the angle of inclination of the putty surface to the pane may be accurately determined, and the degree of uniformity of inclination is therefore dependent wholly upon the skill with which the knife is used. Again, when the knife is held in this manner so as to properly compress the putty beneath the rearward edge of the same, it is exceedingly difficult to maintain line contact between the outer edge of the knife and the pane, and as the putty is compressed it is 'therefore often forced outwardly from under the knife onto the pane, so that an isolated and undesired strip .of putty is left on the pane. This strip must then be carefully scraped off without disturbing the desired applied strip *adjacent the sash, which is in itself :a delicate operation.

In order to avoid the difficulties incident to the application of put-ty by the "conventional knife in the hands :of an unskilled person, and to substantially improve the appearance :and efficiency of application of putty by thse skilled in the :art, it is proposed in my 'copending application Serial No. 238,876, filed November '4, 1938, to provide a tool which is formed with means defining a positioning surface for engagement with a surface of the window, either the pane or the sash, whereby uniformity of the angle between the surface of the applied putty strip to the pane is assured. The tool is further provided with a surface adjacent the leading end thereof, i. e. that end which is foremost when the tool is moved in the desired direction, which is so formed as to afford a throat by means of which the putty may be compressed,

the following end of the, tool being formed with a plane surface of appreciable extent.

It is further proposed in my prior application to provide a putty applying tool having a surface for engagement with the window pane, whereby the angular relation between the putty surface and the pane can be definitely established, in which the smoothing surface of the tool terminates in an edge inclined at the same angle to the pane as is the line formed by the juncture of two perpendicularly disposed putty strips at the corner of the window frame, whereby this line of juncture can betsharply and accurately defined, or a neat radius can be formed in the corner of the putty by. slightly rounding the nose on the tool. v

I have found that it is essential to proper operation of a tool of this character that the. throat, or the portion of the tool which compresses the putty beneath the smoothing surface, should be of substantial length in the direction of move ment of the tool in order that it may function properly, for the same reason that the ordinary fiat putty knifejmust be of substantial width in order that it may be effectively employed. In general the "surface which eifects crowding of the putty beneath the smoothing surface should be of a length, measured in the direction of movement of the tool, at least equal to the width of the face of "the finished putty strip, and I prefer to so construct the tool that the major portion thereof will function as a compressing throat, a minor portion only of the length 'of the tool, measured in the direction of movement thereof, serving to smooth the surface of the compressed putty. With such an arrangement I am able to ensure that the putty will be tightly packed and pockets avoided, so that the life of the putty and the strength of the strip in resisting displacement of the pane is increasedto the maximum. V v

'The term's"r'elieved portiono'r relieved surface, or "the terms throat or throat portion, will be employed hereinafter in referring "to the above described portion of the putty en'ga'gin'g surface which flares or diverges outwardly with respect to the line 'of intersection of the window pane and the sash, in the direction 'ofmovemen't of the tool, and which defines with the sash a restricted passage tapering toward that portion of the tool which serves to smooth the compressed put'ty. It will be appreciated that the putty is gradually compressed in this tapered passage as the tool is displaced along the sash. V

The instant invention contemplates certain tent of the putty smoothing portion of the active surface, the tool is quite effective and is, under some conditions of use, more readily manipulated. Thus it is possible, with a tool of this character, to propel the tool in either direction, and

thus to'apply the'putty by reciprocating movement of the tool along the sash. Consequently those unfamiliar with the tool and its method of use are not likely to become confused regarding the proper direction of propulsion of the too], since either end' of a given active surface of the tool may constitute the putty compressing portion thereof, a

In order to ensure proper cohesion of the putty to the sash and window surfaces. and to form a putty strip of maximum strength and pleasing appearance, it is customary to establish an angle between the face of the putty strip and the ane which is notsubstantially greater than 60". I have found, however, that when a tool of the character described in my prior application is constructed to form. a putty face of conventional angular relation with the pane, the application of pressure on the tool to maintain the same incontact with the sash tends to cause the face of the tool to ride up on the sash edge, thereby lifting the pane engaging surface of the tool from the'pane. In order that this diificulty may be overcome without materially changing conventional practice, it is proposed as part of the instantinvention to provide a tool having a putty engagingface of which the angular relation to the pane varies outwardly of the pane. Thus this face may be so formed that a substantial portion thereof adjacent the pane forms a given angle with the latter, whereas that portion of the face which engages the sash edge forms with the pane an angle which is substantially greater, whereby the outward thrust on the tool resulting from the a plication of pressure necessary to maintain the tool in engagement with the sash edge is materially reduced.

The desired result may be achieved, if desired,

by gradual curvature of the surface of the tool outwardly of thepane from a minimum angular relation to the paneto a maximum angular relation, .or the putty engaging surface of the tool may define two distinct planes forming different In either event, a slight crown isgiven to the putty engaging face as viewed ina plane perpendicular to that face and perpendicular to the plane engaging surface of the tool.

It is preferable to provide a tool having at least two putty engaging surfaces, the intersection of which may be employed to form and shapethe intersection of two adjacent putty engaging strips, as described in my prior application, and it is of some advantage to form a tool of generally triangular outline having three putty engaging surfaces. Alternatively, the tool may be pointed at one end and rounded at the other, so as to provide only one edge for defining the intersection of two adjacent putty strips, the rounded portion at the other end of the tool, which may be employed for smoothing operations, merging gradually into the converging portions which form the aforesaid edge. It is sometimes preferable to form two or more of the putty engaging surfaces of the tool with different angular relations to the pane engaging surface as measured in planes perpendicular tothe latter. With such a toolI am enabled "to select that putty engaging surface affording the particular qangular relation with the pane which is most suitable for a given sash. Again, I may form the putty engaging surface of the tool to afford other than a generally flat surface so as to give an ornamental effect to the putty strip. For example, the surface may be so constructed that the intersection thereof with a plane perpendicular to such surface and to the pane engaging surface of the tool is either stepped or ornamentally curved, whereby the putty is given a corresponding configuration A further object f the invention is the pro- Figure 3 is a perspective View, and Figures 4 and 5 are'plan viewsillustrating the manner in which the device of Figure 1 is employed in the application of putty to a window frame; v

Figure 6 is" a 'plan view ofa modified form of device; g r Figure 7 is a side elevation of the device shown in Figure 6; W l Figures8, 9 and 10 are perspective views illustrating methods of using the device shown in Figures 6 and '7; 7

Figures 11 and 12 are enlarged fragmentary sectional views illustrating alternative methods of crowning the putty engaging surface of the device in a plane perpendicular to i to such surface;' A 7 Figures 13 and 14 illustratethe effect obtained by the use of a device having a surface so crowned when applied to different typesof sash;

Figure 15 is a perspective view illustrating a further modification of the device; Figures 16 to 18 inclusive illustrate methods of employing the device shown in Figure '15, V

Figure 19 is a perspective view of a further modification; Figure 20 is a perspective view illustrating the effect obtained by the use of the device shown in Figure 19; V

Figure 21 is a perspective View of a further modification; I a

Figure 22 is a fragmentary view. of the handle which is associated with the device in Figure 21;

Figures 23 and 24 are perspective views illustrating further modifications of the device; and

Figure 25 is a diagrammatic view in perspective illustrating a further modification, enabling the user of the device toform the putty strip with any one of several angles of inclination .to the pane. r p y In order to facilitate an understanding of the with the accompanying the window pane and a invention, reference will be made .to .the several embodiments thereof illustrated in the accompanying drawings and specific language will 'be employed, It will nevertheless be understood that various further modifications .of :the devices illustrated herein, such as would fall within the province of those skilled in the art to construct are contemplated as part of the present invention. The tool illustrated in Figures 1 to 5, inclusive, may be formed by moldinga plastic material, such as Bakelite, glass, or pyrex, or by die casting a metal. In any event the device is preferably an integral structure, and in this instance is illustrated as symmetrical abouta central :axis which is normal to-the window pane. Theidevice is of generally polygonal shape, and is :shown in Figure 1 as triangular in. plan, any, one .of .the three sides constituting a putty engagingrsurface; the edges formed by the intersection of these sides may be employed in forming .and finishing the line at the juncture of two perpendicularly disposed putty strips at'the corner of the sash.

Thus the tool may comprise .a 'basenportion; indicated generally at Ill, and .a handle H which is integral with the base portion and which .con'-' sists of a knob having ribs on the periphery thereof to facilitate grasping in the hand. Each of the putty engaging surfaces [A forming the sides of the base It is angularly related to the bottom l5 of the base, the. latter being formed .to provide a flat surface for engagement with the window pane to position the'tool. Ilhe angular relation of these surfaces, as measured in apla-ne perpendicular to the bottom or positioning surface and to the putty engaging surface, is usually about 120, so that the putty engaging surface may form a putty strip having an angle of approximately 60 with the window pane.

Each of the putty engaging surfaces is further preferably crowned in planes parallel to the positioning surface I5, and in the form of the device shown in Figure 1, this crown is obtained by curving each putty engaging surface throughout the length thereof. Thus the upper'an'd lower edges bounding each putty'engaging sur face may constitute parallel circular arcs;

It will be appreciated that the edges I6 formed at the intersection of .two adjacent putty engaging surfaces may be used for finishing the juncture of two adjacent putty strips, as .hereinbefcre explained. The edges l6 may be slightly rounded, if desired.

The mode of operation of the device be readily understood from an inspection of Figures 3 to 5 inclusive of the draviings' putty strip I3 is first applied roughly, for example by the fingers, at the juncture of the pane' 1! and the sash it, the tool is held with the positioning surface l5 thereof in engagement with the pane, and with one of the putty engaging surfaces '14 in contact with the outer sash edge l.8, asshown in Figure 5. The tool may then :be propelled in either direction, the putty being gradually compressed into position beneaththe' leading 3 other words, in the propulsion of the tool along thesash, the leading, end of the active putty enagingsurface should be spaced from the sash to .an extent sufdcient to effect gradual compression of the putt-y and prevent extrusion of the putty away from the sash so as to leave a line of undesired putty on the pane. The required len th of this throat portion may be substantially reduced by so constructing the tool that :the throat. portion thereofv maintains contactswith the pane over substantially the entire length of the throat, as is the case inthe type of tool shown in Figures 1 to 5 of the drawings. With this end in view, ;I find that a tool dimensioned substantially as shown in Figure 5 ,of the drawings should be so held that the leading edge thereof is spaced from the outer sash edge by about /8. On the other hand the tool should not he rocked about the sash to such an extent that the leading edge thereof will be spaced from the outer edge of the sash by more than otherwise the rearward edge will engage the putty surface and the angular relation of the surface of the putty strip to the pane will vary;

The method whereby the line of juncture between two adjacent putty strips may be properly formed isshown more particularly in Figured. Thus the tool is moved into the sash corner, and is rotated about the corner, and may then be propelled along the adjacent putty strip to compress and smooth the latter. By properly positioning and slightly rocking the tool on the sash edge, effective and smooth application of the putt) can be insured regardless of the consistency of the putty.

'I h e radius of the arcs which establish the contour of the putty applying surface in planes.

parallel to the positioning surface or to the pane shol d not be too great. 7 Thus as. theyarc in surface in contact with the finished putty strip is also beneficially increased, but the opening in the leading end is decreased and greater care must be exercised in order to maintain the tangential relation between the putty engaging surface and the sash edge. On theother hand, the radius inquestion should not be too small, since the area of the positioning surface is thereby. reduced and the tool will have a tendency to tip, The surface contact on the intersecting putty strip-- shown at l'1a,-Fig. 4, is also controlled by this radius. If this surface contact is too large, the intersecting putty strip will be pulled away from the sash edge as the tool shown in Fig, 4 is moved to the left. If this contact istoo small a bulge will be formed in the surface of the intersecting putty strip. Between these limits the radius in question may be varied over a considerable range, and the proper radius may be very readily determined by test.

;I n Figures 6 and '7 is illustrated a modified form of *tool having putty engaging surfaces 29 and 2! which are preferably curved in planes parallel to the bottom or positioning surface 22, as hereinbefore explained, so as to afford putty compressing and putty smoothing portions. The edge 23 formed by the intersection of the surfaces 29 and 2| may be utilized to define and shape the line .of juncture of two adjacent putty strips at the corner of the sash. Instead .of providing three putty engaging surfaces of substantially equal length and similar contour, as in the form of the invention shown in Figures 1 "to 5 inclusive, the tool shown in Figures 6 and 7 is formed at that end remote from the edge 23 to provide a generally conical surface 25'which' constitutes a continuation of the surfaces 20 and 2|. The axis of the cone defined by thesurface 25 is normal to the positioning surface 22 and preferably coincides substantially with the axis of the handle 21, although forsome purposes it may be desirable to space these axes longitudinally of the tool.

The method of use of this type of tool is illustrated in Figures 8 to 10 inclusive. In compressing and finishing a putty strip intermediate thesash corners, the conical surface 25 may be employed, and may be moved back and forth along the sash as shown in Figure 9, being effective to compress and smooth theputty on either direction of movement as explained in connec-'- tion with Figures 1 to 5 inclusive. Such a conical surface is found-particularly effective in the replacement of portions of putty strips which have become broken away, and it Will be appreciated that the tool may be more or less carelessly manipulated since the rotation of the" tool about the axis of the handle 21 over a considerable range has no effect on therelation'between the surface 2 5 and the putty strip. The tool may of course be used in the same manner as is pro posed in connection with the tool' shown in Figures 1 to 5, either of the putty engaging surfaces 20 and 2| being employed to compress and smooth the putty strip. Figures 8 and 10 illus- 'rrate the method of'fo'rming the line of juncture of two adjacent putty strips, Figure 10 showing the'tool in engagement with the line of juncture of the putty strips and Figure 8 showing the tool as it is being moved away from the corner. Asthe tool is moved across this line of juncture from one putty strip to another, it is rotated about the corner'of the sash to bring the'tool into the proper position to compress and smooth the adjacent putty strip, and this rotation is effected automatically by engagement of the edge 23 of the tool with the sash corner.

It will be noted from an inspection of Figure 7 that the putty engaging surfaces 20, 2|, and 25 of the tool are crowned in planes perpendicular to the positioning surface 22- and to the respective putty engaging surfaces, One method of so crowning the putty engaging surface is shown in Figure 11, in which that portion 23 of the surface adjacent the positioning surface 22 and the' pane is ai'cuate, and that portion'29 of the putty engaging surface remote from the pane is substantially a straight line, as viewed in a section normal to such surface; In Figure 12, the intermediate portion 32 of the surface is formed as an arc of a circle, the portions of the surface adjacent the pane and remote from the pane being substantially fiat. i 1

This crowning of the putty engaging surface is desirable for several reasons. Thus by increasing the inclination of the putty engaging surface outwardly 'of the pane, the tendency of the tool to leave the pane when urged against the sash edge 18 is materially reduced, as hereinbefore explained. Again, a tool with such a crowned surface may be formed so as to cooperate readily with sashes of different depth. Figum 13 illustrates the mode of cooperation between a crowned surface and a standard sash, the tool being shown in dotted lines, the sash l2 and the putty strip I 3 being shown in section, the whole being considerably enlarged. The putty strip l3 as illustrated is a perfect strip havinga fiat outer face. Figure'le illustrates the mode of cooperation between the same tool and a sash I2 of the type commonly employed in storm windows, having considerably less depth. It will be noted that the outer portion of the putty applying surface of thettool is'so formed that rega'rdless of a wide variation in the depth of the sash, the angular disposition of' this surface at thepoint'of engagement with the outer edge. if! of the sashis such that the application of pressure on the tool to hold the same in engagement with the sash gives rise to only a very. 'smallcomponent of force outwardly of the pane, and the tool may-therefore be. readily retained in proper engagement with thep'ane. At the same time the puttyengaging surface of the tool conforms almost precisely to the surface of the theoretically perfect putty strip, the discrepancy adjacent the pane, as indicated by the dimension arrows in these two figures, being only approximately .01". While it might be expected that a crowned putty applying surface would form a putty'strip having a slightly concave face, it is actually found that the putty has a tendency to swell or puff after smoothing, so that the resulting putty face is actually more nearly flatthan would be anticipated from an inspection of these figures.

' Figure 15 illustrates a further modified form of tool which is generally. V-shaped in plan, this tool havingrtwo" puttyengagirig surfaces 30 which intersect at the leading end of the tool to ,,form an edge 3| 7 whereby the i juncture of 7 two adjacent putty. strips may be defined. The edges 32a defining therearwar'd ends of the putty engaging surfaces- 30 are also preferably so formed that they also maybeemployed to shape the putty at the corners of the sash. Thejsurfaces 30 maybe curved or otherwise crowned in planes parallel to the bottom orpositi'oning surface of the tool; as hereinbefore explained, and may also be crowned in planes normal to this positioning surface and to the putty engaging'surfaces 30.

- Figure .16 illustrates the employment of a rear by means of the edge 3|, the tool being rocked aging suriac'es'35.

about the cornerof the sash in much the same manner as is described in connection 'with the tool shown inFi'g'urelO. The compression and smoothing of the putty strip intermediate the sash corners is illustrated'in Figure 18, the tool being positioned so as to afford an adequate throat portion as hereinbefore explained, 'and be in'g capable of functioning effectively regardless of the directionof movement along the sash.

In Figure 19 is illustrated a tool which is generally of the samextype as that shown in Figures 1 and 2 of thedrawings; employing three putty en'- formed adjacent their intersection to provide a stepped portion 36; As shown in Figure 20, the stepped portion 36 of the putty engaging surfaces gives an ornamental effect, the face of the putty strip being correspondingly stepped. Various further modifications of this arrangement may be effected, it being possible to secure any desired ornamental effect by suitably altering the contour of the puttyengagin'g surfaces in planes normal thereto. The line of juncture of adjacent putty strips at the corners of the sash is of course properly defined by rocking the tool in the corner in the manner explained in connection with other embodiments.

It is sometimes desirable to employ a handle which is capable of displacement to differentpo Two of these surfaces are.

,any surface, either of the pane or of the sash,

sitions with relation to the base of the tool, and one such form of handle is shown in Figure 21, in which the tool base is formed to provide a generally spherical socket 33 which embraces a spherical head 39 formed'at the lower end of the handle 40. A pin 421s provided on the spherical head ,39, this pin extending within a slot 43 in the socket 33-. It, willbe appreciated that with this construction it is-jpossible to position the handle ,40 at any desired angle with respect to the lation between the sash and the putty engaging surface 45 of the ,tool may be established in accordance. with the principles hereinbefore set forth.

Figure 23 illustrates a modified form of the invention in which the tool may be formed from sheet metal. This tool is generally V -shaped in plan, having two lateral wings 50 of which the outer faces form the putty engaging surface. Each wing ,50 terminates atits rear end in an inwardly directed flange and theintersection of these flanges with the wings50 form edges which may be employed to define the line of juncture of two adjacent putty strips. The edge formed at the intersection of the wings 50 may also be employed for this purpose, and the device is preferably strengthened by an integral bridge 53 which extends between the wings 50 and affords a support for the handle 54.

Figure 24 illustrates a further form of the invention which maybe made from sheetmetal or the like, having a single wing 60 terminating at each end inedge's 6| which may be employed to shape the putty at the sash corners. Formed integrally with the wing 68 is a generally U- shaped portion 63 which forms a handle, the lower surface of the remote end 64 of this U- shaped portion and the lower edge of the win-t 60 defining the positioning surface for engagement with the window pane. In the formation of a tool of the type shown in Figures 23 and 24', the principles hereinbefore described may be employed in establishing the shape of the putty engaging surfaces.

Figure 25 illustrates a tool of the general type shown in Figures 1 and 2, but which is modified so as to permit the finishing of putty strips which afiord any one of several desired angles with the pane. Thus the tool is of generally triangular shape, being provided with three putty engaging surfaces 13, each of which affords a different angle of inclination with the bottom or positioning surface of the tool, these several angles being indicated at A, B, and C. The tool is employed in precisely the same manner as the tool shown in Figures 1 and 2, but it is possible to employ any one of the putty engaging surfaces and thereby to establish a selected angle of inclination of the finished putty to the Window pane.

It is obvious that various features of the invention disclosed herein are applicable to putty applying devices which differ widely in structure. For example, the principles of .the invention may be employed in connection with devices of the character disclosed in my prior application, some of which are provided with positioning surfaces adapted for engagement with other parts of the window than the pane. In this connection it may be pointed out that the term window surface, as employed herein, is used to designate extending generally parallel to the'direction of movement of the device in applying the'piitty.

It is further contemplated, as a part ,oflthe invention, that the novel methods of constructing the putty engaging surface of the tool ma be employed with a tool similar to the conventional putty knife, and having no positioning surface, eventhough such a tool does not'lend itself as wellto use by unskilled persons. Tools constructed as described herein are effective in applying the putty uniformly regardless of the type of putty employed, and satisfactory results can be obtained even though the consistency of the putty varies over a considerable range.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A- device for applying putty to a window,

said device being formed to provide means defining a putty engaging surface having a relieved throat portion provided with an edge formed to engage the window pane, said surfacehaving a crowned configuration in a plane parallel to the window pane and having a crowned configuration in a plane perpendicular to the windowpane and to the said surface, the crowning of said putty engaging surface in a plane perpendicular to the window pane being insufiic'ient to establish substantial concavity in the finished putty strip, but being suificient-to prevent the device from riding up on a shallow sash when the tool is urged toward the sash, while maintaining a conventional anglewith the pane adjacent the latter. I

2. A device for applying putty to .awindow, said device being formed to provide means dofining a plane surface for engaging a window surface, and means defining a putty engaging surface angularly related to said positioning surface, said putty engaging surface having a relieved throat portion provided with an edge formed to engage the window pane, the angle defined by said putty engaging surface and said pane increasing outwardly of said pane, the extent of increase of the angle being insufficient to establish substantial concavity in the finished putty strip, but being sufficient to prevent the device from riding up on a shallow sash when the tool is urged toward the sash, while maintaining a conventional angle with the pane adjacent the latter.

3. A device for applying putty to a window, said device having means defining a flat surface for engagement with the window pane, and a surface angularly disposed with respect to said first surface for engaging and smoothing the putty and for engaging the sash outwardly of the pane, said putty engaging surface having a relieved throat portion provided with an edge formed to engage the window pane, said last named surface being crowned in planes perpendicular to both of said surfaces to provide a gradually converging throat portion extending over a major part, measured in the direction of movement of the device, of said putty engaging surface, the crowning of said putty engaging surface in a plane perpendicular to the window pane being insufficient to establish substantial concavity in the finished putty strip, but being sufficient to prevent the device from riding up on a shallow sash when the tool is urged toward the sash, whlile maintaining a conventional angle with the pane adjacent the latter.

4. A tool for applying putty to windows, said tool being formed to provide a positioning surface for engagement with a-window'pane and two, separate putty engaging surfaces, each of and being convexly curved in planes parallel to putty ing apositioriing surface for engagement with a Window pane, and a generally conical putty engaging surface of which the axis is substantially at right angles to said first named surface.

1 "6. A tool forapplying putty to windows, said tool being formed to provide a positioning surface for engagement with a window pane and two separateputtyengaging surfaces, each of said putty engaging surfaces being angularly disposed with respect to said positioning surface, said putty engaging surfaces intersecting at an angle not substantially greater than-90 toform an inclined edge adapted to shape the line of *intersection of adjacent putty strips at the corners of the'sash, and a third puttyengaging sin-face merging into and connecting'said first named putty engaging surfaces at points remote from said'inclined edge, said third surface constituting aportion of a conical section having an axis substantially perpendicular to said positioning surface.

7. A tool for applying putty to Windows, said tool being generally triangular in plan, and being said" putty engaging surfaces being angularly' disposed with respectto said positioning surface,

formed to provide a positioning surface for engagement with a Window pane, and three putty engaging surfaces defining three sides of the triangle.

8. A tool for applying putty to windows, said tool being generally triangular in plan, and formed to provide a positioning surface for engagement with a window pane, and three putty engaging surfaces defining three sides of the triangle, each of said putty engaging surfaces being convexly curved in planes parallel to said positioning surface.

9. A tool for applying putty to windows, said tool being generally triangular in plan, and

formed to provide a positioning surface for engagement with a window pane, and three putty engaging surfaces defining three sides of the triangle, said putty engaging surfaces being angularly related to said positioning surface, such angular relation of the three putty engaging surfaces diifering substantially.

10. A device for applying putty to a window, said device being formed to provide means defining a positioning plane surface for engaging a window surface, means defining a putty engag-.

ing surface angularly disposed with respect to said positioning surface, said putty engaging surface being convexly curved in planes parallel to said window engaging surface, handle means for propelling said device along said window surface,

said handle means having a universal joint connection with said device, and means acting between said device and handle meansto couple the same for rotative movement about an axisnormal to said positioning plane surface.

JOHN M. cnRIs'rMAn. 

